I FELT ASLEEP WHEN I______MY EXERCISES. A. AM DOING B. AM BEING D...

139. - DAP AN TIENG ANH CONG CHUC QUANG NGAI 2017
DAP AN TIENG ANH CONG CHUC QUANG NGAI 2017

139. I felt asleep when I______my exercises.

A. am doing B. am being did

C. was doing D. all are correct

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